<html lang="en">
    <head>
        <tile>form<br></tile>
    </head>
    <body>
        {#可以这样注释#}
        <!也可以这样注释>
    <form method="post">
        <!text是内置类型，username是post过去的名字>
        <label>user</label><input type="text" name="username"><br>
        <label>password</label><input type="password" name="password"><br>
        <label>ConfirmPw</label><input type="password" name="password2"><br>
        <input type="submit" value="submit"><br>
        {%for message in get_flashed_messages()%} <!获得flash的消息>
        {{message}}
        {%endfor%}


    </form>




    </body>
</html>